| 0,0 → 1,140 |
|---|
| /* |
| * Copyright (c) 2001-2004 Jakub Jermar |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| /** @addtogroup genericproc |
| * @{ |
| */ |
| /** @file |
| */ |
| |
| #ifndef KERN_TASK_H_ |
| #define KERN_TASK_H_ |
| |
| #include <cpu.h> |
| #include <ipc/ipc.h> |
| #include <synch/spinlock.h> |
| #include <synch/mutex.h> |
| #include <synch/rwlock.h> |
| #include <synch/futex.h> |
| #include <adt/avl.h> |
| #include <adt/btree.h> |
| #include <adt/list.h> |
| #include <security/cap.h> |
| #include <arch/proc/task.h> |
| #include <arch/proc/thread.h> |
| #include <arch/context.h> |
| #include <arch/fpu_context.h> |
| #include <arch/cpu.h> |
| #include <mm/tlb.h> |
| #include <proc/scheduler.h> |
| |
| struct thread; |
| |
| /** Task structure. */ |
| typedef struct task { |
| /** Task's linkage for the tasks_tree AVL tree. */ |
| avltree_node_t tasks_tree_node; |
| |
| /** Task lock. |
| * |
| * Must be acquired before threads_lock and thread lock of any of its |
| * threads. |
| */ |
| SPINLOCK_DECLARE(lock); |
| |
| char *name; |
| /** List of threads contained in this task. */ |
| link_t th_head; |
| /** Address space. */ |
| as_t *as; |
| /** Unique identity of task. */ |
| task_id_t taskid; |
| /** Task security context. */ |
| context_id_t context; |
| |
| /** Number of references (i.e. threads). */ |
| atomic_t refcount; |
| /** Number of threads that haven't exited yet. */ |
| atomic_t lifecount; |
| |
| /** Task capabilities. */ |
| cap_t capabilities; |
| |
| /* IPC stuff */ |
| answerbox_t answerbox; /**< Communication endpoint */ |
| phone_t phones[IPC_MAX_PHONES]; |
| /** |
| * Active asynchronous messages. It is used for limiting uspace to |
| * certain extent. |
| */ |
| atomic_t active_calls; |
| |
| /** Architecture specific task data. */ |
| task_arch_t arch; |
| |
| /** |
| * Serializes access to the B+tree of task's futexes. This mutex is |
| * independent on the task spinlock. |
| */ |
| mutex_t futexes_lock; |
| /** B+tree of futexes referenced by this task. */ |
| btree_t futexes; |
| |
| /** Accumulated accounting. */ |
| uint64_t cycles; |
| } task_t; |
| |
| SPINLOCK_EXTERN(tasks_lock); |
| extern avltree_t tasks_tree; |
| |
| extern void task_init(void); |
| extern void task_done(void); |
| extern task_t *task_create(as_t *as, char *name); |
| extern void task_destroy(task_t *t); |
| extern task_t *task_run_program(void *program_addr, char *name); |
| extern task_t *task_find_by_id(task_id_t id); |
| extern int task_kill(task_id_t id); |
| extern uint64_t task_get_accounting(task_t *t); |
| |
| extern void cap_set(task_t *t, cap_t caps); |
| extern cap_t cap_get(task_t *t); |
| |
| #ifndef task_create_arch |
| extern void task_create_arch(task_t *t); |
| #endif |
| |
| #ifndef task_destroy_arch |
| extern void task_destroy_arch(task_t *t); |
| #endif |
| |
| extern unative_t sys_task_get_id(task_id_t *uspace_task_id); |
| |
| #endif |
| |
| /** @} |
| */ |